How Do Observations of Distant Galaxies Help Us Learn About

question 59

Multiple Choice

How do observations of distant galaxies help us learn about galaxy evolution?

• A)Observations at different distances show galaxies of different ages and therefore different stages of evolution.
• B)We can observe the birth of galaxies.
• C)We can observe the evolution of a single galaxy over time.
• D)We can observe two galaxies merging and what the result is,helping us learn how mergers affect evolution.
• E)We can see what our galaxy used to look like and therefore theorize about the physical processes that led to its current appearance.

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Definitions:

MPS

The marginal propensity to save, which is the proportion of an increase in income that is saved rather than spent on consumption.

Disposable Income

Funds at households' discretion for savings and spending pursuits after the deduction of income taxes.

Autonomous Consumption

The minimum level of consumption that would still occur even if a consumer had no income, based on basic needs and obligations.

MPS

Marginal Propensity to Save, which is the fraction of an increase in income that is not spent on an increase in consumption.